The phone was plugged in to my computer (I was doing development) and was running all the time. Suddenly, while I was not doing development or doing anything, the phone died and I have have never been able to turn it on again.
- Hold the Power button
- Hold both Power and Volume down button
- Take out the battery and put it in again
- Replace the batter with another one from my friends' working-perfectly-fine Galaxy S3
The result is the same: no response from the phone at all - it's completely cold, no sound, light or vibration at all - all I've seen is the blank unchanged screen so please don't ask me about the start up screen
What can I do?